package com.sky.aspect;

import com.sky.annotation.AutoFill;
import com.sky.context.BaseContext;
import com.sky.enumeration.OperationType;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import java.lang.reflect.Method;
import java.time.LocalDateTime;

@Aspect
@Component
@Slf4j
public class AutoFillAspect {
    @Pointcut("execution(* com.sky.mapper.*.*(..))&& @annotation(com.sky.annotation.AutoFill)")
    public void autoFillPointCut(){}
    @Before("autoFillPointCut()")
    public void autoFill(JoinPoint joinPoint){
        log.info("填充....");
        MethodSignature signature=(MethodSignature) joinPoint.getSignature();
        AutoFill autoFill=signature.getMethod().getAnnotation(AutoFill.class);
        OperationType operationType=autoFill.value();
        Object[] args=joinPoint.getArgs();
        if (args == null||args.length==0){
            return;
        }
        Object entity=args[0];
        LocalDateTime now=LocalDateTime.now();
        Long currentId= BaseContext.getCurrentId();
        if (operationType==OperationType.INSERT){
            try{
                Method setCreateTime=entity.getClass().getDeclaredMethod("setCreateTime",LocalDateTime.class);
                Method setCreateUser=entity.getClass().getDeclaredMethod("setCreateUser",Long.class);
                Method setUpdateTime=entity.getClass().getDeclaredMethod("setUpdateTime",LocalDateTime.class);
                Method setUpdateUser=entity.getClass().getDeclaredMethod("setUpdateUser",Long.class);
                setCreateTime.invoke(entity,now);
                setCreateUser.invoke(entity,currentId);
                setUpdateTime.invoke(entity,now);
                setUpdateUser.invoke(entity,currentId);
            }catch (Exception e){
                e.printStackTrace();
            }
        } else if (operationType==OperationType.UPDATE) {            try{
            Method setUpdateTime=entity.getClass().getDeclaredMethod("setUpdateTime",LocalDateTime.class);
            Method setUpdateUser=entity.getClass().getDeclaredMethod("setUpdateUser",Long.class);
            setUpdateTime.invoke(entity,now);
            setUpdateUser.invoke(entity,currentId);
        }catch (Exception e){
            e.printStackTrace();
        }
            
        }
    }
}
